Simultaneous Determination of Tramadol and Ibuprofen in Pharmaceutical Preparations by First Order Derivative Spectrophotometric and LC Methods

2008 ◽  
Vol 68 (9-10) ◽  
pp. 843-847 ◽  
Author(s):  
A. B. Thomas ◽  
N. G. Dumbre ◽  
R. K. Nanda ◽  
L. P. Kothapalli ◽  
A. A. Chaudhari ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Pharmaceutical Preparations ◽  
Order Derivative ◽  
First Order

scholarly journals UV Spectrophotometric Simultaneous Determination of Paracetamol and Ibuprofen in Combined Tablets by Derivative and Wavelet Transforms

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Vu Dang Hoang ◽  
Dong Thi Ha Ly ◽  
Nguyen Huu Tho ◽  
Hue Minh Thi Nguyen
Keyword(s):  
Simultaneous Determination ◽  
Wavelet Transforms ◽  
Hybrid Approach ◽  
Uv Spectra ◽  
Order Derivative ◽  
First Order ◽  
Spectrophotometric Methods ◽  
Combined Use ◽  
Linear Concentration

The application of first-order derivative and wavelet transforms to UV spectra and ratio spectra was proposed for the simultaneous determination of ibuprofen and paracetamol in their combined tablets. A new hybrid approach on the combined use of first-order derivative and wavelet transforms to spectra was also discussed. In this application, DWT (sym6 and haar), CWT (mexh), and FWT were optimized to give the highest spectral recoveries. Calibration graphs in the linear concentration ranges of ibuprofen (12–32 mg/L) and paracetamol (20–40 mg/L) were obtained by measuring the amplitudes of the transformed signals. Our proposed spectrophotometric methods were statistically compared to HPLC in terms of precision and accuracy.

scholarly journals Simultaneous Determination of the Textile Dyes in Industrial Effluents by First-Order Derivative Spectrophotometry

2009 ◽  
Vol 25 (4) ◽  
pp. 487-492 ◽  
Author(s):  
Vitor C. ALMEIDA ◽  
Alexandro M. M. VARGAS ◽  
Juliana C. GARCIA ◽  
Ervim LENZI ◽  
Cláudio C. OLIVEIRA ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Industrial Effluents ◽  
Textile Dyes ◽  
Derivative Spectrophotometry ◽  
Order Derivative ◽  
First Order
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